Operation failed when open login link plesk

[hesama]

hi
when open plesk login link recived this error
The operation you were performing failed. You can retry the operation with or without changing its parameters. You may also want to report this problem to our support so that we could help you as soon as possible.
how fix ?

 

[IgorG]

Need more details. Try to troubleshoot it with help of article http://kb.parallels.com/111289

 

[hesama]

how can view plesk log ?
im add server to whmcs when cick login to plesk login succesfully
when open direct login link recived this error